The Arena Cobra Mirror swim goggles are designed for outdoor competitions and feature UV-protection and an anti-fog coating. They sport clear vision, a watertight seal and a hydrodynamic profile for clean entry into the water. These great swimming goggles offer superior comfort, stability and fit. Arena Cobra Mirror Goggles are outfitted with a double, adjustable silicone strap and four interchangeable nose pieces for a comfortable, stable fit. Arena Cobra Mirror swim goggles are a clear choice for competitive swimmers!